uneven brake wear

[70chevellemalibu]

I finally have enough miles on the car that I think I may have found my true brake issue. Long story short is i have LS 4 wheel discs with a home made caliper bracket shown below. I cant remember the thickness i got the bracket cut but i dont think its to thin due to the caliper lining up almost perfect with the rotor. Anyways with enough miles on the car im getting uneven brake wear on the rotor more wear on the outside edge than on the inside edge by the rotor hat, so im not getting full clamping force.

Is it possible that the caliper bracket is bending or is this a caliper alignment issue? if its a caliper alignment issue do i solve this with an angle finder and have the caliper bracket at true 90 degrees or grease sliders more?

Im not sure where to go with this.



thanks